640006920

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{28219}}^1$

素因数の和:28249

約数の個数: 160

約数和(自身を含む): 2458526400

約数和(自身を除く): 1818519480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 81, 84, 90, 105, 108, 120, 126, 135, 140, 162, 168, 180, 189, 210, 216, 252, 270, 280, 315, 324, 360, 378, 405, 420, 504, 540, 567, 630, 648, 756, 810, 840, 945, 1080, 1134, 1260, 1512, 1620, 1890, 2268, 2520, 2835, 3240, 3780, 4536, 5670, 7560, 11340, 22680, 28219, 56438, 84657, 112876, 141095, 169314, 197533, 225752, 253971, 282190, 338628, 395066, 423285, 507942, 564380, 592599, 677256, 761913, 790132, 846570, 987665, 1015884, 1128760, 1185198, 1269855, 1523826, 1580264, 1693140, 1777797, 1975330, 2031768, 2285739, 2370396, 2539710, 2962995, 3047652, 3386280, 3555594, 3809565, 3950660, 4571478, 4740792, 5079420, 5333391, 5925990, 6095304, 7111188, 7619130, 7901320, 8888985, 9142956, 10158840, 10666782, 11428695, 11851980, 14222376, 15238260, 16000173, 17777970, 18285912, 21333564, 22857390, 23703960, 26666955, 30476520, 32000346, 35555940, 42667128, 45714780, 53333910, 64000692, 71111880, 80000865, 91429560, 106667820, 128001384, 160001730, 213335640, 320003460, 640006920]

約数ペア:

[(1, 640006920), (2, 320003460), (3, 213335640), (4, 160001730), (5, 128001384), (6, 106667820), (7, 91429560), (8, 80000865), (9, 71111880), (10, 64000692), (12, 53333910), (14, 45714780), (15, 42667128), (18, 35555940), (20, 32000346), (21, 30476520), (24, 26666955), (27, 23703960), (28, 22857390), (30, 21333564), (35, 18285912), (36, 17777970), (40, 16000173), (42, 15238260), (45, 14222376), (54, 11851980), (56, 11428695), (60, 10666782), (63, 10158840), (70, 9142956), (72, 8888985), (81, 7901320), (84, 7619130), (90, 7111188), (105, 6095304), (108, 5925990), (120, 5333391), (126, 5079420), (135, 4740792), (140, 4571478), (162, 3950660), (168, 3809565), (180, 3555594), (189, 3386280), (210, 3047652), (216, 2962995), (252, 2539710), (270, 2370396), (280, 2285739), (315, 2031768), (324, 1975330), (360, 1777797), (378, 1693140), (405, 1580264), (420, 1523826), (504, 1269855), (540, 1185198), (567, 1128760), (630, 1015884), (648, 987665), (756, 846570), (810, 790132), (840, 761913), (945, 677256), (1080, 592599), (1134, 564380), (1260, 507942), (1512, 423285), (1620, 395066), (1890, 338628), (2268, 282190), (2520, 253971), (2835, 225752), (3240, 197533), (3780, 169314), (4536, 141095), (5670, 112876), (7560, 84657), (11340, 56438), (22680, 28219)]